Clutch-pulley.



LCKE, 0F BRADFGRJD, AND ELEMENT W. BRNG, OF BR'DFORD TV/M SEH?, MCKEAN COUNTY, FENNSYLVANIA.

CLUTCH-P ULLEY.

enanas.,

l Specification of Letters Patent.

Patented July 2d, figli?.

To all whom it may concern: y

Be it known that we, HENRY H. l'iooiin and (2) CLEMENT 'W'. Bonino, citizens of. the United States, residing at (l) Bradford and (2) in Bradford township, in the county of McKean and State of Pennsylvania, have `'in-- vented certain new and useful improvements in Clutch-Pulleys, of which the following is a specitication, reference being` had therein to the accompanying drawing.

Our invention relates to improvements in clutch pulleys.

The object of our invention is to provide a pulley in which the friction surface is loosely mounted upon the body of the pulley and can he readily coupled or uneoupled to the body portion, whereby/'the belt does not have to be shifted to air-idle pulley, but the bearing surface of the lpulley is uncoupled from the body portion, whereby the pulley is free to rotate and the belt thereon 1s not driven.

Another object of our invenA ion is to prix# vide a more simple, cheap and elfeetive purl,- ley of this character havingcertain construction. and advantages, which will be hereinafter more fully set forth in the speciii'cation.

In the accompanying drawings: Figure l is a side elevation of our improved pulley applied.' Fig. 2 is a longitudinal vertical sectional view of Fig. l. l? 3 is a transverse sectional View taken on the line QMQ, Fig. 2, showing the clutch band out of engagement with the friction surface. Fig. t is a transverse sectional view taken on the same line as Fig. 3, showing,l the clutch band locking the friction surface fthereto.

'Referring' new to the drawing, -l repre sente a shaft which may be mounted in any' desired bearings, such as shown in the drawings and indicated at 2 and 3, and said shaft may be connected directly to the engine or motor, not shown, or may be driyen by the engine by means of belting or gearing, all of which would forni no part of our invention. The outer end of the shaft l has keyed thereon by means of the longitudinal hey Ll, a Asleeve 5. The inner end of the sleeve is provided with an outwardly extending annular flange 6, forming an abutment for the sleeve 7, loosely mounted upon the sleeve. yThe sleeve 7, as shown, extends out flush with the outer end of the sleeve 5, and the sleeve 5 extends a slil'it distance beyond the 5 shaft l. The sleeve 7 has forined integral therewith at the center the outwardly ex tending` radial web 8, said web carrying at its outer periphery the friction surface 9, which .formed integral with the web '8. 60 The friction surface is infthe Iforni of a, sleeve, already shown, andis ofl allength exactly that of the sleeve 7. yWill/rile lwe have shown and described the sleeve?, web 8 and friction surface S) all formed integral and cast, it will be understood that ea'eh and all of these parts could be ina-de separately and secured 'together in any desired ilianner without departing from our invention. i

At the outer end of the sleeve 5, a dish l0, the outer periphery ci which is flush with the periphery of the friction surface and said disk resting snugly against thef outer end ci the sleeve Passing through openings in the dish are screw-bolts l'l,75 which are screwed into the end of the sleeve and whereby the disk is locked to the shaft, as will be clearly shown. W e preferably use four'of these screw-bolts Vto lock the disk'ou the sleeve arranged equal dis- 80 tances apart, but it will be understood that any desired nunibe may be used.

The disk l0 on the iruer face adjacent the outer periphery thereof, is provided with Vlugs l2 and 13, which extend within 85 the bearing surface 9, of thepulleyf The said disk and lugl 12 are provided with an opening` 1 4 through which passes the reduced end l5 of the pin 16. The cuter end. of the pin is screw-threaded and has screwed lthereon a nut 17, whereby the pin is firmly clamped to the dish and rigidly supported thereby. wilfilhin the bearing surface 'i the expansion or friction dish ring 18, which is provided with an inwardly enlarged portion. 955 19, having` an 'opening 2O through which the pin 1G passes and by ineens of this pin the ring` is supported and carried by the disk 10.

The ring 18 is provided with an enlarged 100 portion 2l, on the opposite side, and said ring being divided through said enlarged portion and having seinicircular recesses 22 and 9.3 in opposite faces thereof The ring being split it will be seen that centrifugal force will tend to throw` the ring outwardly and cause a frictional engagement between. the ring and "the inner periphery of thev senses ried by the rock shaft and engaging the sleeve and means for moving the sleeve on the shaft.

5. A pulley of the character described, comprising a driving shaft, a sleeve keyed thereon, a friction surface loosely mounted upon the sleeve, a disk rigidly secured to the outer end of the sleeve, a pin carried by the disk and extending Within the friction suiface, a split ring carried by the pin Within the friction surface, a rook shaft mounted iu the disk and extending between the ends of the ring and having Wings adapted to engage the ends of the ring and expand the same against the friction surface and means for rocking said rock shaft.

6. A pulley of the character described, comprising a driving shaft, a sleeve keyed upon the shaft, a sleeve rotatably mounted upon the keyed sleeve, a radial Web carried thereby, a friction surface carried by the said web, a disk rigidly secured to the outer end of the keyed sleeve, a pin carried by the disk and extending Within the friction surface, a split ring carried by the ring Within the friction surface, the free ends of the ring having enlarged portion having semicircu lar bearing portions, rock shaft mounted in the dist and extending in said bearing portion, wings carried by the shaft and engaging the ends of the split ring, a shaft rigidly secured to the outer face of the disk, a sleeve carried by the shaft and longitudi nally movable thereon and having a beveled surface, a spring for normally holding the sleeve inwardly, and in the path of said rock shaft, and means for moving said sleeve on the shaft.

In testimony whereof We hereunto affix our signaturesin the presence of two witnesses.

HENRY H.l LOCKE. CLEMENT W. BORING. Witnesses:

EDWARD JLFKINS, HERMAN H. NoRTH. 

